Problems

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Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 3966 617 16% 0.01 803 422 53% 7.2
10 Kinds of People 6835 1474 22% 0.01 1182 810 69% 5.2
2048 4544 2208 49% 0.00 2096 1790 85% 2.4
3D Printed Statues 3273 1614 49% 0.00 1511 1356 90% 2.0
3D Printer 312 53 17% 0.00 101 46 46% 8.7
3-Sided Dice 1363 97 7% 0.00 217 77 35% 8.7
4 thought 4285 1448 34% 0.00 1432 1199 84% 2.7
A1 Paper 2998 892 30% 0.00 869 679 78% 3.4
Aaah! 14236 6945 49% 0.00 6066 5638 93% 1.7
Abandoned Animal 697 128 18% 0.03 153 112 73% 4.7
ABC 4872 2293 47% 0.00 2199 1997 91% 1.6
Above Average 1947 861 44% 0.00 885 796 90% 2.0
A+B Problem 3927 375 10% 0.04 577 198 34% 8.2
A Brief Gerrymander 104 21 20% 0.15 22 13 59% 7.1
Abstract Art 171 41 24% 0.00 37 28 76% 5.8
Absurdistan Roads II 481 170 35% 0.00 162 109 67% 6.8
Absurdistan Roads III 1077 281 26% 0.02 270 195 72% 6.0
A Classy Problem 4853 1299 27% 0.01 1097 855 78% 4.1
ACM Contest Scoring 4029 2509 62% 0.00 2189 2073 95% 1.4
Adding Words 5094 1135 22% 0.00 1216 918 75% 3.9
A Different List Game 4705 324 7% 0.00 572 110 19% 9.1
A Different Problem 16879 6664 39% 0.00 6138 5330 87% 2.2
Adjoin the Networks 1193 326 27% 0.00 280 214 76% 6.0
Administrative Difficulties 562 122 22% 0.03 155 96 62% 6.6
Advanced Causal Measurements 24 7 29% 0.10 8 7 88% 5.5
Adventures in Moving -- Part IV 553 177 32% 0.00 165 141 85% 4.6
A Favourable Ending 894 186 21% 0.00 216 144 67% 5.2
A Feast For Cats 1018 368 36% 0.19 243 197 81% 4.9
Air Conditioned Minions 2467 680 28% 0.00 736 540 73% 4.5
Airline Hub 1296 222 17% 0.01 252 137 54% 7.0
Airport Coffee 612 133 22% 0.09 118 93 79% 6.5
Airport Construction 2476 332 13% 0.02 253 133 53% 7.2
Airport Logistics 45 10 22% 0.00 16 10 62% 7.7
Airports 197 66 34% 0.13 63 46 73% 6.0
Akcija 3336 1488 45% 0.01 1313 1156 88% 2.0
Aladin 673 58 9% 0.10 101 18 18% 8.9
Alchemy 84 10 12% 0.03 22 10 45% 8.5
Alea iacta est 24 11 46% 0.34 13 11 85% 5.9
Alice in the Digital World 1182 296 25% 0.01 313 238 76% 4.0
Alien Numbers 1377 701 51% 0.00 688 621 90% 2.0
A List Game 4934 1462 30% 0.00 1403 1167 83% 3.0
All about that base 1936 740 38% 0.00 787 655 83% 2.9
All Different Directions 661 298 45% 0.00 275 241 88% 2.6
Allergy Test 261 90 34% 0.00 76 43 57% 7.2
All Friends 598 107 18% 0.00 100 51 51% 9.1
All Just A Dream 1076 240 22% 0.05 176 126 72% 6.0
All Pairs Shortest Path 5383 919 17% 0.02 621 435 70% 4.9
Almost Perfect 3640 846 23% 0.00 908 710 78% 3.3
Almost Union-Find 3982 657 16% 0.02 630 332 53% 6.9
Alphabet 298 146 49% 0.00 156 130 83% 3.1
Alphabet Spam 4113 2666 65% 0.00 1979 1900 96% 1.4
Alternative Bracket Notation 188 78 41% 0.00 82 68 83% 5.6
Amalgamated Artichokes 2939 1329 45% 0.01 1175 1025 87% 2.4
Amanda Lounges 1073 292 27% 0.04 257 198 77% 5.7
A Mazing! 1153 287 25% 0.09 130 95 73% 5.7
Amazing Race 241 62 26% 0.39 69 49 71% 6.6
Ambiguous Result 130 41 32% 0.03 56 39 70% 6.7
Amsterdam Distance 742 276 37% 0.00 322 249 77% 2.9
A Multiplication Game 224 51 23% 0.00 69 48 70% 5.9
Anagram Counting 2000 777 39% 0.00 741 616 83% 2.9
Andrew the Ant 130 39 30% 0.06 51 35 69% 6.0
A New Alphabet 7045 3216 46% 0.00 3035 2819 93% 1.6
Animal Classification 1158 235 20% 0.03 218 135 62% 7.1
An Industrial Spy 1143 588 51% 0.02 447 382 85% 3.3
Another Brick in the Wall 1392 747 54% 0.00 732 666 91% 2.0
Another Candies 4842 1307 27% 0.00 1381 1128 82% 2.9
Another Dice Game 78 57 73% 0.00 49 46 94% 3.7
Another Query on Array Problem 890 112 13% 0.05 189 81 43% 7.5
Anthony and Cora 557 145 26% 0.00 175 117 67% 5.8
Anthony and Diablo 1234 424 34% 0.00 477 406 85% 2.5
Antiarithmetic? 761 118 16% 0.01 200 94 47% 7.9
Ants 1724 791 46% 0.00 584 511 88% 2.5
Apaxiaaaaaaaaaaaans! 6265 3943 63% 0.00 3569 3427 96% 1.3
Apparatus 550 134 24% 0.01 112 85 76% 5.2
Apple Market 414 80 19% 0.07 88 47 53% 8.3
Apples, Cherries, and Mangos 293 93 32% 0.02 86 68 79% 5.9
Aquarium Tank 298 90 30% 0.00 80 62 78% 4.5
Aqueduct Construction 111 36 32% 0.01 32 26 81% 7.0
A Question of Ingestion 495 113 23% 0.00 105 80 76% 5.7
Arable Area 221 48 22% 0.04 50 30 60% 7.8
A Rational Sequence 1040 332 32% 0.00 376 263 70% 5.2
A Rational Sequence 2 1120 811 72% 0.00 746 711 95% 1.6
A Rational Sequence (Take 3) 449 380 85% 0.00 274 265 97% 1.7
Arbitrage? 1577 303 19% 0.04 223 180 81% 3.3
Arcade! 1020 191 19% 0.01 173 128 74% 5.9
Arctic Network 1054 377 36% 0.00 314 249 79% 4.5
A Real Challenge 4019 1940 48% 0.00 1908 1775 93% 1.7
Area of Effect 79 9 11% 3.16 14 7 50% 8.0
Arithmetic 1333 382 29% 0.00 377 290 77% 3.8
Army Strength (Easy) 2131 1108 52% 0.00 980 882 90% 2.0
Army Strength (Hard) 2842 1454 51% 0.01 989 875 88% 2.4
Around and Around We Go 28 11 39% 0.00 16 10 62% 7.9
Around the track 15 4 27% 0.01 8 4 50% 8.1
Around the Track 258 33 13% 0.00 50 23 46% 8.0
Arranging Hat 194 81 42% 0.05 76 66 87% 5.2
Arranging Wine 106 22 21% 0.03 31 21 68% 6.5
Arriving on Time 152 53 35% 0.04 50 41 82% 5.0
Artur 261 60 23% 0.06 68 43 63% 6.5
Artwork 709 251 35% 0.06 232 149 64% 6.0
A Safe Bet 235 69 29% 0.15 67 49 73% 6.6